Index: /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlProcess.cpp
===================================================================
--- /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlProcess.cpp	(revision 84153)
+++ /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlProcess.cpp	(revision 84154)
@@ -93,5 +93,5 @@
         pStartupInfo->psz##a_Str = RTStrAlloc(a_cb); \
         AssertPtrBreak(pStartupInfo->psz##a_Str); \
-        pStartupInfo->cb##a_Str  = a_cb; \
+        pStartupInfo->cb##a_Str  = (uint32_t)a_cb; \
     }
 
@@ -194,5 +194,5 @@
         pStartupInfoDup->psz##a_Str = (char *)RTStrDup(pStartupInfo->psz##a_Str); \
         AssertPtrBreak(pStartupInfoDup->psz##a_Str); \
-        pStartupInfoDup->cb##a_Str  = strlen(pStartupInfoDup->psz##a_Str) + 1 /* Include terminator */; \
+        pStartupInfoDup->cb##a_Str  = (uint32_t)strlen(pStartupInfoDup->psz##a_Str) + 1 /* Include terminator */; \
     }
 
@@ -202,5 +202,5 @@
         pStartupInfoDup->psz##a_Str = (char *)RTMemDup(pStartupInfo->psz##a_Str, pStartupInfo->cb##a_Str); \
         AssertPtrBreak(pStartupInfoDup->psz##a_Str); \
-        pStartupInfoDup->cb##a_Str  = pStartupInfo->cb##a_Str; \
+        pStartupInfoDup->cb##a_Str  = (uint32_t)pStartupInfo->cb##a_Str; \
     }
 
Index: /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlSession.cpp
===================================================================
--- /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlSession.cpp	(revision 84153)
+++ /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlSession.cpp	(revision 84154)
@@ -1055,5 +1055,5 @@
         pStartupInfo->psz##a_Str = RTStrAlloc(a_cb); \
         AssertPtrBreak(pStartupInfo->psz##a_Str); \
-        pStartupInfo->cb##a_Str  = a_cb; \
+        pStartupInfo->cb##a_Str  = (uint32_t)a_cb; \
     }